Car-underframe.



PATENTED AUG. 20, 1907.

No. 863,871. H. M. PFLAGER.

CAR UNDE-RFRAME. APPLIOATION FILED MAR. 9. 1907.

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UNITED STATES PATENT formen.

HARRY M. PFLAGER, ,or sT. Louis, nrssonm.`

GAR-UNDERFRAME.

Specification of Letters Patent...

i Patented Aug.2o,19o7.

Application filed March 9,1907. Serial No. 361,522.

To all whom it may concern: I

Be ityknown that I, Hanny M. PFLAGER, a citizen of the United States, residing' at St, Louis, in the State 4 n U of Missouri, have lnvented a new and useul lmprovement in Car-Underframes, of which the following is a specification.

My invention relates to the underframe of a railroad car, and has for its object to produce a metallic underi'rame in which the body-holsters are connected rigidly to each other by middle longitudinal beams, and to the side and ond sills respectively, by diagonalmembers wr braces, all in the same horizontal plane, for enabling 'he stress oi the drait-gear applied directly to the body? holsters at their middle portion, to be transmitted thereby to the best advantage through the said beams and sills, and for transmitting any stress or shock coming immediately on the center part or ends oi the end sills, to the body-bolsters at their junction with the said beams, or maximum resisting part oi' thel underframe.

The invention consists in eaturesto novelty as hereinafter described and c laimed,` reference being had to the accompanying drawing forming of this.

specification, whereon, v

Figure l, is a top plan v ievt1 of my improved metallic car underframej Fig'. 2, a vertical longitudinal section to enlarged scale through one of the body-holsters and i adjacent end part of the underirame on line 2 y 2, in Fig. l; Fig. 3, a cross section through one of the transverse separators and needle-beams respectively, ofthe underirame on line 3, 3, in Fig. l; Fig/i, a vertical transverse section to enlarged scale through the underirame on line 4, 4, in Fig. 1, looking to the left, and showing the body-bolster in side elevation, and Figs. '5, and 6, similar views to Fig. 4, on lines 5, 5, and 6, 6, in Fig. l, looking to the right, and showing the separators,

and one oi the needle-beams respectively, between the eacl1`body-bolster a, of a suitable self-centering draftgear c having a spring or springs without follower-plates on each side of the said center, such as that described in the Letters Patent of the United States granted to Harry M. Plager, `lanuary 23, 1906, Number 810,805, Y

for improvement in draft-gear ior railroad cars, the end portions of the beams b, which are arranged w'ith their webs vertical and their flanges outward toward the side longitudinal sillsvd of the outer Irectangular portion of the underl'rame, being in the present case inserted within openings 1, ioimed transversely tbrougli the body-bolsters o., the webs of the beams b bearing against the inner side Walls 2, of the. openings l., to Which they are rigidly iixed byl rivets 3c 'Along the top and bottom oi the web of each beam b on its iinianged side between the body-bolsters e is riveted a reinorcing .angle iron 4, which butts (or not) endwisc against the inner sides oi the'body-bolsters a. I Y By making the beams b" channel-shaped, with the angles 4 riveted thereto as described, l obtain, Vin those cases where. the height of the beam is limited, a stronger section with less material than when made channel or IF-shaped with top and bottom Vcover plates riveted to the vcorresponding-'f anges thereof, in which case somo of the metal of the greatest value isfeut out for the rivet. holes. I

Overlappingand. lying between Lthe flanges of the (ill end portions of the beams b Within the openings 1, of Y each body-bolster a, are fixed by the rivets S, the v inner end portions of two corresponding channel-shaped, members e, having their webs vertical and'anges outward, similarly to the beams t, the members c converging from the body-holsters a to their outer Aends which are fixed to the adjacent end sill f of the outer rectangular portion of the under-frame by angles 5,

andrivets 6, as shown, or in any other suitable manner.

The body-bolsters a are fixed at their ends by rivets '7, (of Otherwise) directly t0 the'side longitudinal sus -df and are further connected to the longitudinal sills d by diagonally ,arranged and preferably L-shaped bars r braces g, the inner ends oi which overlap the corresponding. end portions of the end sill convergent members'e andare secured thereto and .tothe beams b and body-holsters a by the rivets 3,'the' duter ends of the braces g being fixed to the side sills d and end sills f (preferably at the junction of the said sills with each other, or corners of the rectangular portion of the underframe), by angles 7, .and rivets 8, as shown, or otherwise as found most suitable.

The beams b are held apart from each other and from the side longit'vdinal sills d respectivelyat suitable intervals between the body-bolsters a, by transverse y channel or other suitably shaped separators 9, and 10,l i

which-'are fixed at their ends to the beams b and sills by angles 11,"and rivets 12.- Furtliermore, the beams b and side sills d are braced to each other transversely by the needle-beams h which straddleland are riveted (or otherwise'fxed) thereat to the beams b, and at their ends to the sidc'sills d as shown, the bottonropening of each needle-beam h'being` spanned by preferably two angle bars13, which are riveted to'thevbottom reinforcing angleirons 210i the beams 'b and at their ends to the adjacent bottom members 14 of the needlebeams fi. It win 15e-noted in this comedien am. om

- angle barsml being arranged side by side, as seen particularly in Fig. 3, andcoperating with the top and iottom members 14, and l5, of` the needle-beams h the latter are adapted-to be loaded at the endsi'and supported in the' middle, or vice versa, according to whether the side'or center sills are loaded excessively; that is to say, whenloaded at the ends the members 13, i4, will be in compression, and conversely.

By the application of. draft-gear without followerplates such as that described in the said patent, directly to the body-bolsters a, the middle longitudinal beams b, which in the ordinary car construction are comparatively close together, due to the use and limitation in length of the follower-plates for the ordinary draft-gear, can be spaced wider apart and the load thereon and on the side longitudinal sills more equally distributed. Moreover, any stress on the end sills f and endwise on the side longitudinal sills d is concentratedA and transmitted to thc body-bolsteis attheir junction with the middle longitudinal beams b, or along| the line ol maidmum resistance of the undermme. I I

What l claim as my invention and desire to secure by Letters Patent is.

1. A metallic'under-frame for a. railroad car, comprising two side sills, two end sills, two body-holsters fixed at their ends to the side sills, and having suitable draft- 'gear Vapplied to the central portion thereof respectively,

the said members converging 'from the body-bolster andy fixed at their other end to the corresponding end sill at Y its middle portion, all the said parts beingl arranged in the same horizontal plane, substantially as described and foi'lthepurpose set forth.

2. A metallic under-frame for a railroad car, comprising two side sills two cud sills, two body-holsters fined at their ends to the side sills, and huvi'ng'a suitable draft- ;car applied ttr the central portion thereof respectively, two middle longitudinal beams connecting the bodybolsters to each other, one on each side of the longitudinal center of the car, and spaced pai't an equal distance, or -therenhout, from each other and from the side sills, two members iixed at one end to each lbody-bolster at the junction therewith of the said beams, and converging therefrom and fixed at their'othei' end to the corresponding en d sill at its middle portion, and two diagonally arranged braces fixed at one end to each body-bolster atv `the junction therewith of the said vbeams, and dt their other end tol-thel said sills, stt the junction, or .there-- about, ofthe said 'sills with each other, all' tbe'fslfii4 parts being arranged in 'the same horizontal plane, or

theres-bout, substantially as described a'nd for the purpose set forth.

In vtesrirriony whereof I have signed my name to this (,IiAnLns W. BLOCK, EriwAnn W. Form1-1m.. 

